CN211554278U - Double-plug voltage measuring device - Google Patents
Double-plug voltage measuring device Download PDFInfo
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- CN211554278U CN211554278U CN201921528445.1U CN201921528445U CN211554278U CN 211554278 U CN211554278 U CN 211554278U CN 201921528445 U CN201921528445 U CN 201921528445U CN 211554278 U CN211554278 U CN 211554278U
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Abstract
The utility model discloses a voltage measuring device is surveyed to double plug, include: the device comprises a shell, a signal prompt module arranged on the shell and a detection identification circuit arranged in the shell; an insulating protection seat is fixed at the front end of the shell, and a first plug and a second plug which are used for jacking the socket safety protection door and extending into the socket jack are arranged on the insulating protection seat; the signal prompt module is connected with the output end of the detection identification circuit, and a detection antenna connected with the input end of the detection identification circuit is fixed in the first plug. The utility model has reasonable and ingenious design, convenient detection and high safety factor, and can jack the safety protection door by the first plug and the second plug in a cooperative manner, so that the detection antenna can be closer to the charged body in the socket, and the measurement accuracy is ensured; the socket is suitable for new and old national standard sockets, meets the use requirements of customers, and is easy to popularize; in addition, the device can still give accurate detection feedback to a user under the strong light or dark environment, and is favorable for improving the operating efficiency of the user.
Description
Technical Field
The utility model relates to a zero line and live wire detection area, concretely relates to voltage measuring device is surveyed to double plug.
Background
With the development of the electronic industry, the types of sockets tend to be diversified, wherein the zero-live wire connection of the two-hole socket is easy to be confused, and because the normal switch controls the live wire, if the connection is wrong, the switch is turned off and only the zero wire is cut off, and the live wire is still electrified, the electric shock accident is easy to cause; meanwhile, some electric appliances have requirements on the access of the zero line and the live line and cannot be reversely connected, if the connection is reversely connected, certain functions cannot be achieved, and even the electric appliances are damaged; therefore, the detection of the national standard two-hole socket is often needed before the socket is installed and important electric devices are used and during maintenance operation.
At present, devices capable of detecting voltage in a non-contact mode are single-plug, after the new 3C forced certification is issued, new national standard sockets are provided with safety protection doors, and for safety, the safety protection doors in two holes are required to be simultaneously applied with force to open the safety protection doors in use; therefore, the voltage measuring device with a single plug on the market cannot be inserted into the jack of a new national standard socket, an effective voltage signal is difficult to detect, a special tool is needed, and the voltage can be detected only by opening the safety protection door of the socket, so that the process is complicated, and time and labor are wasted;
in addition, because the plug is mostly required to be inserted into the jack of the socket in the detection process of the non-contact voltage-detectable device, the transverse thickness of the plug is necessarily very small, and the plug is easy to bend or even break under the condition of receiving transverse external force, so that the service life is influenced.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model discloses a voltage measuring device is surveyed to double plug.
The utility model discloses a realize that the technical scheme that above-mentioned purpose adopted is:
a dual plug voltage measurement apparatus comprising: the device comprises a shell, a signal prompt module arranged on the shell and a detection identification circuit arranged in the shell; an insulation protection seat is fixed at the front end of the shell, and a first plug and a second plug which are used for jacking the socket safety protection door and extending into the socket jack are arranged on the insulation protection seat; the signal prompting module is connected with the output end of the detection identification circuit, and a detection antenna connected with the input end of the detection identification circuit is fixed in the first plug.
The first plug and the second plug are arranged in parallel.
And a searchlight is arranged on the insulating protection seat corresponding to the space between the first plug and the second plug.
And a limit stop for wrapping the tail section of the second plug extends from the insulating protection seat.
The detection identification circuit comprises a signal conversion unit and a micro control unit which are connected in sequence; the signal conversion unit comprises an analog-to-digital converter, the analog-to-digital converter is connected to the signal input end of the micro control unit, and the detection antenna is connected to the input end of the analog-to-digital converter.
The signal prompt module comprises a voltage warning lamp which is fixed on the shell and connected with the micro control unit; the voltage warning lamp comprises a first light emitting diode and a second light emitting diode, and the first light emitting diode and the second light emitting diode are connected to a first output end and a second output end of the micro control unit respectively.
The first light emitting diode is a red light emitting diode, and the second light emitting diode is a green light emitting diode.
The signal prompting module also comprises a buzzer arranged in the shell; and the buzzer is connected with the third output end of the micro control unit through an NPN type triode.
The emitter of the NPN type triode is grounded, and the collector and the base of the NPN type triode are respectively connected with the buzzer and the third output end of the micro control unit.
The input end of the analog-to-digital converter is connected with a first divider resistor and a second divider resistor which have the same resistance value; and a capacitor is connected in parallel to the second voltage-dividing resistor.
The utility model has the advantages that: the utility model has reasonable and ingenious design, convenient detection and high safety factor, and can jack the safety protection door by the first plug and the second plug in a cooperative manner, so that the detection antenna can be closer to the charged body in the socket, and the measurement accuracy is ensured; the socket is suitable for new and old national standard sockets, meets the use requirements of customers, and is easy to popularize; in addition, the buzzer is combined with the searchlight, so that the device can still give accurate detection feedback to a user in a highlight or dark environment, and the operation efficiency of the user is improved.
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Drawings
Fig. 1 is a front view of a dual-plug voltage measuring device according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an insulation protection seat in an embodiment of the present invention;
fig. 3 is a circuit diagram of a detection identification circuit according to an embodiment of the present invention;
fig. 4 is a usage state diagram of the voltage measuring device with two plugs for detecting the socket according to the embodiment of the present invention.
Detailed Description
In an embodiment, referring to fig. 1 to 4, the voltage measuring device with two plugs provided in this embodiment includes: the device comprises a shell 1, a signal prompt module arranged on the shell 1 and a detection identification circuit arranged in the shell 1; an insulating protection seat 2 is fixed at the front end of the shell 1, and a first plug 21 and a second plug 22 which are used for jacking a safety protection door of the socket and extending into a jack of the socket are arranged on the insulating protection seat 2; the signal prompt module is connected with the output end of the detection identification circuit, and a detection antenna connected with the input end of the detection identification circuit is fixed in the first plug 21.
Specifically, the first plug 21 and the second plug 22 are independent from each other, and the new national standard socket comprises a live wire end jack and a zero wire end jack which are arranged on the socket shell, and a live wire body 62 and a live zero wire live wire body 62 which are respectively arranged corresponding to the live wire end jack and the zero wire end jack; a safety protection door 61 is arranged corresponding to the live wire end jack and the zero line end jack;
in addition, when a socket with a safety protection door 61 in a new national standard is detected, the first plug 21 and the second plug 22 are driven by the insulation protection seat 2 to be respectively inserted into a live wire end jack and a null wire end jack of the socket, and the first plug 21 and the second plug 22 apply force together along a direction perpendicular to the safety protection door 61 to extrude the safety protection door 61;
the first plug 21 and the second plug 22 are continuously pushed to move, so that the head ends of the first plug 21 and the second plug 22 are respectively close to the live line conductor 62 and the zero line conductor 62.
Therefore, the second plug 22 is arranged according to the opening principle of the safety protection door 61, so that the safety protection door 61 can be jacked open through the first plug 21 and the second plug 22 in a cooperative manner during detection, the detection antenna can be closer to the charged body 62 in the socket, the measurement accuracy is ensured, other tools outside the device are not needed, the detection process for the new national standard socket is simple and convenient, and time and labor are saved; even if the socket to old national standard does not have safety protection door 61, because it just is equipped with two jacks originally, this voltage measuring device is also suitable for equally, can satisfy customers' user demand widely, easily popularizes.
The first plug 21 and the second plug 22 are arranged in parallel with each other.
Specifically, the first plug 21 and the second plug 22 are arranged in parallel, because the first plug 21 and the second plug 22 need to cooperate to jack the safety protection door 61 in the detection process, the first plug 21 and the second plug 22 are main stress points in the use process of the device; in addition, because a plug is mostly required to be inserted into the jack of the socket in the detection process, the transverse thicknesses of the first plug 21 and the second plug 22 are necessarily smaller; if the first plug 21 and the second plug 22 are not parallel, the first plug 21 and the second plug 22 are easily deformed after long-term use, or are bent or even broken under the condition of being subjected to a lateral external force, so that the service life is affected. The first plug 21 and the second plug 22 are parallel to each other, which is beneficial to prolonging the service life of the device.
A searchlight is arranged on the insulation protection seat 2 corresponding to the space between the first plug 21 and the second plug 22.
Particularly, poor environments such as insufficient light are often encountered by maintenance personnel, the maintenance personnel generally have self-contained flashlights, the operation is complicated, and the good lighting effect cannot be achieved due to the problems of angles and the like; therefore, the searchlight is arranged between the first plug 21 and the second plug 22 correspondingly, so that the most suitable illumination angle is provided for detection, the operation of a user is facilitated, and the working efficiency is improved.
And a limit stop 23 wrapping the tail section of the second plug 22 extends from the insulating protection seat 2.
Specifically, through the setting of this limit stop 23, when this device was used for the socket to detect, the degree of depth that restriction second plug 22 inserted in the socket jack, and this limit stop 23 corresponds the one side of socket shell and is the plane, can restrict the degree of depth that first plug 21 inserted the socket jack promptly equally, prevent that first plug 21, second plug 22 from inserting the electrified body 62 of too dark contact socket when the user's operation is improper, reduce the potential safety hazard, improve the safety in utilization of this device, consequently the factor of safety of this device is high.
The detection identification circuit comprises a signal conversion unit and a micro control unit 4 which are connected in sequence; the signal conversion unit comprises an analog-to-digital converter, the analog-to-digital converter is connected to the signal input end of the micro control unit 4, and the detection antenna is connected to the input end of the analog-to-digital converter.
The signal prompt module comprises a voltage warning lamp which is fixed on the shell 1 and connected with the micro control unit 4; the voltage warning lamp comprises a first light emitting diode and a second light emitting diode, and the first light emitting diode and the second light emitting diode are connected to a first output end and a second output end of the micro control unit 4 respectively.
The first light emitting diode is a red light emitting diode, and the second light emitting diode is a green light emitting diode.
Specifically, a reference threshold is preset in the micro control unit 4, and during measurement, the first plug 21 is inserted into any end jack of the socket;
when the detection antenna measures that a voltage signal higher than the reference threshold exists, the micro control unit 4 judges that the measurement target of the detection antenna is a live wire and controls the first light emitting diode to light, and then the voltage warning lamp lights red light;
when the detection antenna cannot measure the voltage signal or measures that the voltage signal lower than the reference threshold exists, the micro control unit 4 judges that the measurement target is a zero line and controls the second light emitting diode to be lightened, and then the voltage warning lamp is lightened to emit green light;
in addition, the reference threshold is set according to voltage standards of different national regions and is an accurate numerical value, in a preferred embodiment, a plurality of reference thresholds are preset, and before voltage signals converted by the analog-to-digital converter are acquired, a proper reference threshold is selected according to the national region where a worker is located; the setting principle of the reference threshold is as follows: the national standard socket is equivalent to an alternating power supply, an alternating electric field is formed around the socket, and the antenna is stretched into the alternating electric field, so that corresponding alternating voltage can be induced; meanwhile, because factors such as environment and the like are interfered by other non-test target electric fields and the like, misleading signals are generated, but during testing, the antenna is inserted into the jack of the socket and protected by the socket shell, so that the interference signals can be reduced to the minimum, therefore, a reference threshold is set, when the test signal is smaller than the reference threshold, the test signal is regarded as the interference signal, and the signal is not transmitted to the next step, so that the subsequent judgment is not influenced; if the reference threshold is not set, the interference signal is allowed to continue to be transmitted, and subsequent judgment is interfered, so that serious potential safety hazard is brought.
The signal prompting module also comprises a buzzer arranged in the shell 1; and the buzzer is connected with the third output end of the micro control unit through an NPN type triode.
The emitter of the NPN type triode is grounded, and the collector and the base of the NPN type triode are respectively connected with the buzzer and the third output end of the micro control unit 4.
Specifically, when the detecting antenna measures that a voltage signal higher than the reference threshold exists, the micro control unit 4 controls the buzzer to alarm, so that an operator is reminded that the measuring target is dangerous, and the use safety is improved; when the voltage measuring device is used for detecting under strong light or insolation, operators cannot see clearly due to insufficient brightness of the first light emitting diode and the second light emitting diode, but the voltage measuring device can be suitable for the working environment of the strong light or the insolation through the arrangement of the buzzer. Therefore, the searchlight is combined, so that the device can still give accurate detection feedback to a user under the strong light or dark environment, and the working efficiency of the user is improved.
The input end of the analog-to-digital converter is connected with a first divider resistor and a second divider resistor which have the same resistance value; and a capacitor is connected in parallel to the second voltage-dividing resistor.
Specifically, the second voltage-dividing resistor and the capacitor form a filter circuit, and the voltage signal obtained by the detection antenna is filtered and then input into the analog-to-digital converter, so that interference is reduced, and the detection accuracy is improved.
When a socket with a safety protection door 61 in a new national standard is detected, a first plug 21 and a second plug 22 are respectively inserted into a left jack and a right jack of the socket, and the first plug 21 and the second plug 22 apply force together along a direction perpendicular to the safety protection door 61 to squeeze and open the safety protection door 61 and push the head ends of the first plug 21 and the second plug 22 to be respectively close to a live wire live body 62 and a zero wire live body 62 of the socket;
when the detection antenna measures that a voltage signal higher than the reference threshold exists, the micro control unit 4 judges that the measurement target of the detection antenna is a live wire, controls the first light emitting diode to light, and then the voltage warning lamp lights red light and controls the buzzer to give an alarm;
when the detection antenna cannot measure the voltage signal or measures that the voltage signal lower than the reference threshold exists, the micro control unit 4 judges that the measurement target is the zero line and controls the second light emitting diode to be lightened, and then the voltage warning lamp is lightened to emit green light.
The utility model has reasonable and ingenious design, convenient detection and high safety factor, and can jack the safety protection door 61 by the first plug 21 and the second plug 22 in a cooperative manner, so that the detection antenna can be closer to the charged body 62 in the socket, thereby ensuring the measurement accuracy; the socket is suitable for new and old national standard sockets, meets the use requirements of customers, and is easy to popularize; in addition, the buzzer is combined with the searchlight, so that the device can still give accurate detection feedback to a user in a highlight or dark environment, and the operation efficiency of the user is improved.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, using the technical means and contents disclosed above, without departing from the scope of the technical solution of the present invention. Therefore, the equivalent changes made according to the shape, structure and principle of the present invention should be covered in the protection scope of the present invention.
Claims (10)
1. A voltage measuring device with two plugs is characterized by comprising: the device comprises a shell, a signal prompt module arranged on the shell and a detection identification circuit arranged in the shell;
an insulation protection seat is fixed at the front end of the shell, and a first plug and a second plug which are used for jacking the socket safety protection door and extending into the socket jack are arranged on the insulation protection seat;
the signal prompting module is connected with the output end of the detection identification circuit, and a detection antenna connected with the input end of the detection identification circuit is fixed in the first plug.
2. The dual-plug voltage measuring apparatus according to claim 1, wherein said first plug and said second plug are disposed in parallel with each other.
3. The double-plug voltage measuring device according to claim 1, wherein a searchlight is provided on the insulating protection base between the first plug and the second plug.
4. The apparatus according to claim 1, wherein a limit stop is extended from the insulating protection seat to wrap the end of the second plug.
5. The double-plug voltage measuring device according to claim 1, wherein the detection and identification circuit comprises a signal conversion unit and a micro control unit which are connected in sequence;
the signal conversion unit comprises an analog-to-digital converter, the analog-to-digital converter is connected to the signal input end of the micro control unit, and the detection antenna is connected to the input end of the analog-to-digital converter.
6. The double-plug voltage measuring device according to claim 5, wherein the signal prompt module comprises a voltage warning lamp, and the voltage warning lamp is fixed on the shell and connected with the micro control unit;
the voltage warning lamp comprises a first light emitting diode and a second light emitting diode, and the first light emitting diode and the second light emitting diode are connected to a first output end and a second output end of the micro control unit respectively.
7. The double-plug voltage measuring device according to claim 6, wherein the first light emitting diode is a red light emitting diode and the second light emitting diode is a green light emitting diode.
8. The dual-plug voltage measuring device according to claim 6, wherein said signal prompt module further comprises a buzzer disposed within said housing;
and the buzzer is connected with the third output end of the micro control unit through an NPN type triode.
9. The dual-plug voltage measuring device according to claim 8, wherein the emitter of the NPN transistor is grounded, and the collector and the base thereof are connected to the third output terminals of the buzzer and the micro control unit, respectively.
10. The double-plug voltage measuring device according to claim 7, wherein the input end of the analog-to-digital converter is connected with a first voltage dividing resistor and a second voltage dividing resistor which have the same resistance value;
and a capacitor is connected in parallel to the second voltage-dividing resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528445.1U CN211554278U (en) | 2019-09-16 | 2019-09-16 | Double-plug voltage measuring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921528445.1U CN211554278U (en) | 2019-09-16 | 2019-09-16 | Double-plug voltage measuring device |
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| CN211554278U true CN211554278U (en) | 2020-09-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632364A (en) * | 2019-09-16 | 2019-12-31 | 优利德科技(中国)股份有限公司 | Non-contact voltage detection device, plug-in structure and method |
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2019
- 2019-09-16 CN CN201921528445.1U patent/CN211554278U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110632364A (en) * | 2019-09-16 | 2019-12-31 | 优利德科技(中国)股份有限公司 | Non-contact voltage detection device, plug-in structure and method |
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